Minimum number of observations required.

[tahir]

Dear Sir
I have 9 years data for 5 banks. Thus 45 observations. I want to know what is the minimum number of observations required to estimate fixed effect model so that one is confident about coefficients. Thanks

Tahir

[TomDoan]

That's probably fine. You obviously don't get consistent estimates of the individual-specific intercepts, but assuming the underlying model is correct (that the slope coefficients are fixed across individuals), you have enough to get reasonable estimates of those.